PROBLEM TO BE SOLVED: To provide a motion assist device capable of finely adjusting a movable range of a joint.SOLUTION: A motion assist device 4 includes a mechanical stopper 50 limiting a movable range of a joint. The mechanical stopper 50 includes: a casing 54 an oscillation part 53 oscillating along with motion of a joint and including a projection projecting in a radial direction on an outer periphery a first oscillation amount adjustment part 61 including a plurality of fixing member receiving faces 61b formed in a spiral stairs shape with a rotation shaft 52a as a center, the fixing member receiving face abutting a fixing member 64 fixed on the casing 54, and capable of changing the fixing member receiving face 61b by rotation around the rotation shaft 52a and a second oscillation amount adjustment part 62 including projection receiving faces 62b abutting the projection 53b on an opposite side in an axial direction to the fixing member receiving face 61b of the first oscillation amount adjustment part 61, and capable of changing the projection receiving face 62b by independent rotation around the rotation shaft from the first oscillation amount adjustment part 61.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】関節部の可動範囲を細かく調節することができる動作補助装置を提供する。【解決手段】動作補助装置4は、関節の可動範囲を制限するメカストッパ50を備える。メカストッパ50は、ケーシング54と、関節の動作とともに揺動し外周において径方向に突出する突起が設けられた揺動部53と、ケーシング54に固定された固定部材64と当接させる固定部材受け面61bが回転軸52aを中心としてらせん階段状に複数形成され、回転軸52a回りに回転させることで固定部材受け面61bを変更させることが可能な第1揺動量調節部61と、第1揺動量調節部61の固定部材受け面61bと軸線方向の反対側において突起53bと当接させる突起受け面62bが形成され、回転軸回りに第1揺動量調節部61とは独立して回転させることで突起受け面62bを変更させることが可能な第2揺動量調節部62と、を有する。【選択図】図2
